/* eslint-disable vue/valid-v-for */ /* eslint-disable vue/return-in-computed-property */
<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <!-- 头部警告区 -->
      <el-alert show-icon :closable="false" title="注意:只允许为第三级分类设置相关参数" type="warning"> </el-alert>
      <el-row class="cap_opt">
        <el-col>
          <span>选择商品分类: </span>
          <!-- 选择商品分类的级联选择框 -->
          <el-cascader :clearable="true" v-model="selectedKeys" :options="cateList" :props="cateProps" @change="handleChange"></el-cascader>
        </el-col>
      </el-row>
      <!-- tab页签 -->
      <el-tabs v-model="activeName" type="card" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <!-- 按钮 -->
          <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加参数</el-button>
          <!-- 动态参数表格 -->
          <el-table :data="manyTableData" border stripe>
            <!-- 展开行 -->
            <el-table-column type="expand" label="#">
              <!-- 循环渲染tag标签 -->
              <template slot-scope="scope">
                <el-tag :key="i" v-for="(item, i) in scope.row.attr_vals" @close="handleClose(i, scope.row)" closable>
                  {{ item }}
                </el-tag>
                <!-- 添加的文本框 -->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <!-- 添加的按钮 -->
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引 -->
            <el-table-column type="index" label="#"></el-table-column>
            <!-- 主体 -->
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <!-- 静态参数 -->
        <el-tab-pane label="静态参数" name="only">
          <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加属性</el-button>
          <!-- 静态表格 -->
          <el-table :data="onlyTableData" border stripe>
            <!-- 展开行 -->
            <el-table-column type="expand" label="#">
              <!-- 循环渲染tag标签 -->
              <template slot-scope="scope">
                <el-tag :key="i" v-for="(item, i) in scope.row.attr_vals" @close="handleClose(i, scope.row)" closable>
                  {{ item }}
                </el-tag>
                <!-- 添加的文本框 -->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <!-- 添加的按钮 -->
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>
    <!-- 添加对话框 -->
    <el-dialog :title="titleText" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改对话框 -->
    <el-dialog :title="titleText" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  created() {
    this.getCateList()
  },
  computed: {
    // 如果按钮需要被禁用
    isBtnDisabled() {
      if (this.selectedKeys.length !== 3) {
        return true
      } else {
        return false
      }
    },
    cateId() {
      if (this.selectedKeys.length === 3) {
        return this.selectedKeys[2]
      }
      return null
    },
    titleText() {
      if (this.activeName === 'many') {
        return '动态参数'
      }
      return '静态属性'
    }
  },
  data() {
    return {
      cateList: [],
      // props
      cateProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover'
      },
      // 级联选择框绑定到的父亲节点id
      selectedKeys: {},
      // 被激活页签名称
      activeName: 'many',
      // 动态表格数据
      manyTableData: [],
      // 静态表格数据:[]
      onlyTableData: [],
      // 控制添加对话框显示隐藏
      addDialogVisible: false,
      // 添加表单数据对象
      addForm: {
        attr_name: ''
      },
      // 添加表单校验规则
      addFormRules: {
        attr_name: [{ required: true, message: '请输入参数名称', trigger: 'blur' }]
      },
      // 修改动画框显示属性
      editDialogVisible: false,
      // 修改表单
      editForm: {},
      // 修改表单验证规则
      editFormRules: { attr_name: [{ required: true, message: '请输入参数名称', trigger: 'blur' }] },
      // 控制按钮和文本框的切换
      inputVisible: false,
      // 文本框内容
      inputValue: ''
    }
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取分类列表失败')
      }
      this.cateList = res.data
      // console.log(this.cateList)
    },
    // 级联选择框监听
    handleChange() {
      this.getParamsData()
      // console.log(this.selectedKeys)
    },
    // tab页签点击事件
    handleTabClick() {
      // console.log(this.activeName)
      this.getParamsData()
    },
    // 获取对象函数
    async getParamsData() {
      if (this.selectedKeys.length !== 3) {
        this.selectedKeys = []
        this.manyTableData = []
        this.onlyTableData = []
        return 1
      }
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: this.activeName } })
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数列表失败')
      }
      res.data.forEach((item, inedx) => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        // 控制文本框显示隐藏
        item.inputVisible = false
        // 文本框输入的值
        item.inputValue = ''
      })
      console.log(res.data)
      if (this.activeName === 'many') {
        this.manyTableData = res.data
      } else {
        this.onlyTableData = res.data
      }
    },
    // 添加对话框关闭
    addDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加参数
    addParams() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post(`categories/${this.cateId}/attributes`, {
          attr_name: this.addForm.attr_name,
          attr_sel: this.activeName
        })
        if (res.meta.status !== 201) {
          return this.$message.error('添加参数失败')
        }
        this.$message.success('添加参数成功')
        this.addDialogVisible = false
        this.getParamsData()
      })
    },
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    async showEditDialog(id) {
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes/${id}`, {
        params: {
          attr_sel: this.activeName
        }
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 点击按钮修改参数
    editParams() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return 1
        const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`, {
          attr_name: this.editForm.attr_name,
          attr_sel: this.activeName
        })
        if (res.meta.status !== 200) {
          return this.$message.error('修改参数失败')
        }
        this.$message.success('修改参数成功')
        this.getParamsData()
        this.editDialogVisible = false
      })
    },
    async removeParams(id) {
      const confirmRes = await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmRes !== 'confirm') {
        return this.$message.error('已取消删除')
      }
      const { data: res } = await this.$http.delete(`categories/${this.cateId}/attributes/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除参数失败')
      }
      this.$message.success('删除参数成功')
      this.getParamsData()
    },
    // 文本框失去焦点
    handleInputConfirm(row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ''
        row.inputVisible = false
        return 1
      }
      row.attr_vals.push(row.inputValue.trim())
      row.inputValue = ''
      row.inputVisible = false
      this.saveAttrVals(row)
    },
    async saveAttrVals(row) {
      // 发起请求
      const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`, {
        attr_name: row.attr_name,
        attr_sel: row.attr_sel,
        attr_vals: row.attr_vals.join(' ')
      })
      if (res.meta.status !== 200) {
        return this.$message.error('修改失败')
      }
      this.$message.success('修改参数成功')
    },
    showInput(row) {
      row.inputVisible = true
      // 让文本框自动聚焦
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    // 删除对应参数
    handleClose(i, row) {
      row.attr_vals.splice(i, 1)
      this.saveAttrVals(row)
    }
  }
}
</script>
<style lang="less" scoped>
.cap_opt {
  margin: 15px 0;
}
.el-tag {
  margin: 0 10px;
}
.input-new-tag {
  width: 120px;
}
</style>
